[EN] MESO-SELECTIVE SYNTHESIS OF ANSA-METALLOCENES<br/>[FR] SYNTHESE MESO-SELECTIVE D'ANSA-METALLOCENES
申请人:BASELL POLYOLEFINE GMBH
公开号:WO2005058929A1
公开(公告)日:2005-06-30
The present invention relates to a process for the meso-selective preparation of ansa-metallocene complexes of the formula (I), which comprises reacting a ligand starting compound of the formula (II) with a transition metal compound of the formula III, where R1, R1 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R2, R2 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R3 is a bulky organic radical which has at least 3 carbon atoms, is bound to the oxygen atom via a nonaromatic carbon or silicon atom and may be substituted by halogen atoms or further organic radicals having from 1 to 20 carbon atoms and may also contain heteroatoms selected from the group consisting of Si, N, P, O and S, T, T’ are identical or different and are each a divalent organic group which has from 1 to 40 carbon atoms and together with the cyclopentadienyl ring forms at least one further saturated or unsaturated, substituted or unsubstituted ring system having a ring size of from 5 to 12 atoms, where T and T’ may contain the heteroatoms Si, Ge, N, P, As, Sb, O, S, Se or Te within the ring system fused to the cyclopentadienyl ring, A is a bridge consisting of a divalent atom or a divalent group, M1 is an element of group 3, 4, 5 or 6 of the Periodic Table of the Elements or the lanthanides, the radicals X are identical or different and are each an organic or inorganic radical which is able to be replaced by a cyclopentadienyl anion, x is a natural number from 1 to 4, M2 is an alkali metal, an alkaline earth metal or a magnesium monohalide fragment, p is 1 in the case of doubly positively charged metal ions or 2 in the case of singly positively charged metal ions or metal ion fragments, LB is an uncharged Lewis base ligand, and y is a natural number from 0 to 6, and also the subsequent reaction of these complexes to form ansa-metallocenes of the formula (IV), the use of transition metal compounds of the formula (III) for preparing metallocenes and also transition metal compounds of the formula (III), ansa-metallocene complexes of the formula (I) and the use of these as constituents of catalyst systems for the polymerization of olefines.
本发明涉及一种制备式(I)的中间体选择性的ansa-金属茂配合物的方法,该方法包括将式(II)的配体起始化合物与式(III)的过渡金属化合物反应,其中R1,R1相同或不同,均为氢或具有1至40个碳原子的有机基团,R2,R2相同或不同,均为氢或具有1至40个碳原子的有机基团,R3是一个笨重的有机基团,它至少有3个碳原子,通过非芳香碳或硅原子与氧原子结合,并且可以被卤素原子或具有1至20个碳原子的进一步有机基团取代,并且还可以包含从Si,N,P,O和S的选择的杂原子中选择的杂原子,T,T'相同或不同,均为具有1至40个碳原子的二价有机基团,并且与环戊二烯基环一起形成至少一个具有5至12个原子的饱和或不饱和、取代或未取代的环系统,其中T和T'可以在融合到环戊二烯基环的环系统中包含杂原子Si,Ge,N,P,As,Sb,O,S,Se或Te,A是由二价原子或二价基团构成的桥,M1是元素3、4、5或6的周期表或镧系元素中的一个,基团X相同或不同,均为有机或无机基团,能够被环戊二烯基阴离子取代,x是1至4的自然数,M2是碱金属、碱土金属或镁单卤化物片段,p在二价阳离子金属离子的情况下为1,在单价阳离子金属离子或金属离子片段的情况下为2,LB是一个无电荷的路易斯碱配体,y是0至6的自然数,以及这些配合物的后续反应形成式(IV)的ansa-金属茂,使用式(III)的过渡金属化合物制备金属茂,以及式(III)的过渡金属化合物,式(I)的ansa-金属茂配合物,以及将它们用作催化剂体系的组分,用于烯烃的聚合。